Abstract:
In order to solve the problems of digital telemetry return delay and high caching cost of telemetry acquisition module used in the traditional satellite platforms, a capture-and-send telemetry acquisition circuit based on FPGA control without hardware caching was designed. After receiving the command of telemetry request, the circuit could realize real-time capture-and-send of analog quantity. Under the condition of the same telemetry acquisition period, the delay of digital quantity telemetry and transmission is significantly reduced, Which relieves the dependence on storage devices and reduces the development cost. It may provide high real-time telemetry parameters for the satellite service platform and provide operational basis for the platform to better realize the mission planning.